Iodine stabilization of a diode laser in the optical communication band |
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Authors: | Chui Hsiang-Chen Shaw Sen-Yen Ko Ming-Sheng Liu Yi-Wei Shy Jow-Tsong Lin Tyson Cheng Wang-Yau Roussev Rostislav V Fejer Martin M |
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Affiliation: | Department of Electrical Engineering, National Tsing Hua University, Hsinchu 300, Taiwan. d897916@alumni.nthu.edu.tw |
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Abstract: | The iodine molecule has frequently been used as a frequency reference from the green to the near-infrared wavelength region (500-900 nm). We describe the frequency locking of the second-harmonic signal of a 197.2-THz (1520.25-nm) distributed-feedback diode laser to the absorption lines of the iodine hyperfine structure; a frequency jitter below 0.1 MHz was achieved at a 300-ms time constant. This scheme provides a simple, compact, and high-performance frequency reference in the optical communication band. |
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